ASTROSAT CZTI

Data Quality Report

Orbit 46826

Creation date: 2024-06-27T23:28:10.025185
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C07_001T10_9000006272_46826cztM0_level2.fits modeM0/AS1C07_001T10_9000006272_46826cztM0_level2_quad_clean.evt
Size (bytes)618,517,440122,379,840
Size589.9 MB 116.7 MB
Events in quadrant A7,424,060785,079
Events in quadrant B4,513,530830,688
Events in quadrant C3,516,315840,239
Events in quadrant D6,845,150714,075

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270963
B0188633
C0163283
D0258743

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77024425.738769%
B77022733.544534%
C7702430.558297%
D77026728.725006%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7847 7704 81 81 1.03% 1.05%
B 7847 7704 75 75 0.96% 0.97%
C 7847 7704 13 13 0.17% 0.17%
D 7847 7704 481 481 6.13% 6.24%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 3914220 22681.95 833 814 172.5
A 13 248 115710 665.93 833 814 172.5
A 7 3 75832 434.8 833 814 172.5
B 3 112 1008915 6077.13 843 814 165.9
B 4 171 53172 315.63 843 814 165.9
B 15 36 39720 234.54 843 814 165.9
C 14 254 91339 454.5 851 852 199.1
C 12 250 76919 382.07 851 852 199.1
C 3 233 15313 72.64 851 852 199.1
D 1 52 2632928 12810.59 816 789 205.5
D 13 138 270732 1313.81 816 789 205.5
D 13 249 228573 1108.62 816 789 205.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter